·मोबाइलPCBप्लेटपरस्पीकरटचकरनेवालेपॉइंटोकोस्क्रैचकरे। वायरवालास्पीकरकोहोतोदुबारासोल्डकरे। स्पीकरनयालगाये l PCBप्लेटकोक्लीनर (ACTONE)सेवॉशकरे Scratch the speaker touching points on the mobile PCB plate. If the wired speaker is to be sold then reload. Wash the speaker new l Wash the PCB plate with the ACTONE